Brochure

03513-15NA
TECHNICAL SPECIFICATIONS
Caleffi North America, Inc. · 3883 W. Milwaukee Road · Milwaukee, WI 53208
Tel. [phone] · Fax [phone]
sales@caleffi .com · www.caleffi .com
© Copyright 2015 Caleffi North America, Inc.
WE RESERVE THE RIGHT TO CHANGE OUR PRODUCTS AND THEIR RELEVANT
TECHNICAL DATA, CONTAINED IN THIS PUBLICATION, AT ANY TIME AND WITHOUT
PRIOR NOTICE.
Caleffi 130 series low lead, manual balancing
valves are used to measure and adjust the fl uid
fl ow rate in hydronic or plumbing circuits. The
fl ow rate is directly determined from the pressure
differential (from Venturi effect) measured across
the two pressure test ports. The valve design is
“fi xed orifi ce” with both pressure ports located
upstream of adjustment plug and away from any
pressure variations from turbulence as fl ow passes
the adjustment plug – this feature makes pressure
measurements and thus fl ow determination simpler
and more accurate compared to “variable orifi ce”
type balancing valves. Flow rate is calculated
by simple formula or by easy reference to a fl ow
characteristic graph.
The 130 series balancing valve can be supplied with
optional insulation shells, purchased separately, to
minimize heat loss or eliminate condensation in
chilled water applications.
REFERENCE DOCUMENTATION: TECHNICAL BROCHURE 1251
130 SERIES
CODE CONNECTIONS
MAX. VALVE
C
V
130400A ½” NPT 3.7
130500A ¾” NPT 5.1
130600A 1” NPT 8.8
130700A 1¼” NPT 14.0
130800A 1½” NPT 19.7
130900A 2” NPT 30.5
NPT female threaded connections.
Advantages of balanced circuits
Balanced circuits have the following principal benefi ts:
1. In hydronic applications, the system emitters operate properly saving energy
and providing greater comfort.
2. In plumbing applications such as hot water recirculation, water is not wasted
when there is a call for hot water from a fi xture.
3. Circuit pumps operate at maximum effi ciency, reducing the risk of overheating
and excessive wear.
4. High fl uid velocities which can result in noise, erosion and abrasion are
avoided.
5. The differential pressures acting on the circuit control valves are reduced
preventing faulty operation.
OPEN
CLOSE
RESET ON OFFBT OFF
OPEN
CLOSE
RESET ON OFFBT OFF
OPEN
CLOSE
RESET ON OFFBT OFF
MAX. WORKING PRESSURE 232 psi (16 bar)
WORKING TEMPERATURE RANGE -4 — 250°F (-20 - 121°C)
NUMBER OF ADJUSTMENT TURNS 6
PERFORMANCE
Venturi fl ow rate measurement device
The Caleffi 130 series balancing valve contains two closely spaced pressure test ports, circled in above diagram, located upstream of the valve plug and at dif-
ferent cross sectional areas. As fl uid fl ows through the valve, the velocity at the port closest to the plug is greater than the velocity at the port furthest. The result,
referred to as the Venturi effect, is an induced pressure differential across the ports. System balancing is more precise and quicker compared to variable orifi ce
balancing valves and with both ports upstream of the plug and away from turbulence effects, there is better pressure signal stability and thus less chance for
pressure measurement error. There is also less sensitivity in the presence of fl uid impurities.